參數(shù)資料
型號(hào): 8545AGI-02LF
廠(chǎng)商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類(lèi): 時(shí)鐘及定時(shí)
英文描述: 8545 SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
封裝: 6.50 X 4.40 MM, 0.925 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-20
文件頁(yè)數(shù): 10/13頁(yè)
文件大?。?/td> 668K
代理商: 8545AGI-02LF
ICS8545AGI-02 REVISION A JULY 29, 2009
6
2009 Integrated Device Technology, Inc.
ICS8545I-02 Data Sheet
LOW SKEW, 1-TO-4 LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER
Additive Phase Jitter
The spectral purity in a band at a specific offset from the fundamental
compared to the power of the fundamental is called the dBc Phase
Noise. This value is normally expressed using a Phase noise plot
and is most often the specified plot in many applications. Phase noise
is defined as the ratio of the noise power present in a 1Hz band at a
specified offset from the fundamental frequency to the power value of
the fundamental. This ratio is expressed in decibels (dBm) or a ratio
of the power in the 1Hz band to the power in the fundamental. When
the required offset is specified, the phase noise is called a dBc value,
which simply means dBm at a specified offset from the fundamental.
By investigating jitter in the frequency domain, we get a better
understanding of its effects on the desired application over the entire
time record of the signal. It is mathematically possible to calculate an
expected bit error rate given a phase noise plot.
As with most timing specifications, phase noise measurements has
issues relating to the limitations of the equipment. Often the noise
floor of the equipment is higher than the noise floor of the device. This
is illustrated above. The device meets the noise floor of what is
shown, but can actually be lower. The phase noise is dependent on
the input source and measurement equipment.
Additive Phase Jitter @ 155.52MHz
12kHz to 20MHz = 0.14ps (typical)
SSB
Phas
e
Noise
dBc/Hz
Offset from Carrier Frequency (Hz)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
8545AGI-02LFT 制造商:Integrated Device Technology Inc 功能描述:Clock Fanout Buffer 8-OUT 20-Pin TSSOP T/R 制造商:Integrated Device Technology Inc 功能描述:20 TSSOP (LEAD-FREE) - Tape and Reel
8545B 制造商:Datak Corporation 功能描述:
8545BG 制造商:Integrated Device Technology Inc 功能描述:Clock Driver 2-IN LVDS 20-Pin TSSOP Tube
8545BGILF 功能描述:時(shí)鐘緩沖器 1-to-4 LVCMOS/LVTTL- to-LVDS Fanout Buffe RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲(最大值): 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel
8545BGILFT 功能描述:時(shí)鐘驅(qū)動(dòng)器及分配 1-to-4 LVCMOS/LVTTL- to-LVDS Fanout Buffe RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類(lèi)型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel